Subtle, yet major, bug in Vegas

John_Cline wrote on 5/3/2003, 2:54 PM

This is a weird one and will stop me from using Vegas until it is resolved. I am running Vegas v4.0b.

I have an animation that is 20 seconds long. This particular clip was generated with After Effects as an uncompressed 29.970 interlaced AVI. I place it on the timeline in Vegas and step through it and at exactly 2 seconds 28 frames into the clip, it will repeat that frame for one frame and then continue. The frames at 2:28 and 2:29 are identical. After Effects, Premiere, Virtual Dub and Avid XpressDV DO NOT exhibit this problem when viewing or playing this file. There is absolutely nothing wrong with the clip, the frame rate, dimensions and the field dominance are set correctly, something in Vegas is causing this.

It doesn't matter where I place the clip on the timeline in Vegas or if I trim the head, it will occur at exactly 2:28 into the actual clip. I went back and discovered that it doesn't just happen on this one particular clip. I have a lot of other animations that I have generated in various programs and they ALL exhibit this problem and ONLY in Vegas. If I step through it on the timeline or render it out to a file, Vegas places the repeated frame in the file and it will stutter for a frame when playing the Vegas-generated DV file in anything else.

I just got back from visiting several of my friends who are also running Vegas and the problem happens on their machines as well. This appears to be a subtle, yet serious, bug in Vegas.

Curiously, the duplicated frame does not seem to occur on captured clips.

John

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Comments

BillyBoy wrote on 5/6/2003, 11:29 PM

"The attitude that BB has is that no one on this board, or at SoFo, cares because 'adding one frame is not a big deal".

This is a forum, not a board. Bulletin boards are long gone for the most part but were popular before the Web caught on. <wink>

My beef with John wasn't his 'problem' rather HIS attitude. He acted like, hey I'm a big time producer that does work for a TV network, I'm so important, SoFo drop everything and fix Vegas to handle this After Effects "bug", if you don't, I'm out of here.

That's kind of arrogance and excessive rudness is uncalled for. And John compounded his rudeness by suggesting those that do 'something for grandma' (his words) are less important or less knowledgeable than he or others. So the message John sent was I'm a big shot doing work for some TV network so my work is much more imporant that whatever project you're working on and no matter how trival my problem it should be taken care of first. That's what I took issue with and still do. I try to help EVERYBODY. So do a lot of others here. I rank 'problems' by how many they effect, not by the who's asking. I just know different people use Vegas for different things. To suggest some are less 'professional' or care less, or do sloppy work or don't give a rant's ass (John's tone) was exceeeding rude and yes, I'm still pissed about it. Not that I do things for grandma, I simply couldn't ever be so condescending as John was. Maybe he was having a bad day. I guess. Trying to paint me as the bad guy is pretty funny.

TimTyler wrote on 5/6/2003, 11:47 PM

> My beef with John wasn't his ....

Dude,

Shut the fu@# up, and move on.

Brazilian wrote on 5/7/2003, 1:42 AM

John;

SpeedMangler shows the "true" framerate, in the sense that it is the "rate" divided by the "scale", which are the two fields that are in the AVI file that determine the ultimate framerate. Just punch the two numbers you get into a calculator.

Having said that however, SpeedMangler mangles... so for the time being, you'd have to run it twice, once to see the original speed and once to change it back (unless it was already 30000/1001). I'll make a "look only" version or commandline switch and post up a new version in the next day or so and post a new message when it's available.

John_Cline wrote on 5/7/2003, 2:31 AM

Excellent. Thank you very much, Brazilian, I'll be looking forward to it.

John